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# Question calculating the thickness of paint?

1.21 gallon of paint covers the wall area of 11.4 ft long and 15.7 ft wide. How thick is the paint in mm?

### 4 Answers

- ayushLv 41 decade agoFavorite Answer
1.21 US gallons = 4.58034826 liter = 4 580 348.26 millimeters^3

Area of wall = 178.98 ft = 54 553.104 millimeters

thickness = 4580348.26 / 54553.104 = 83.96 mm

- fizixxLv 71 decade ago
1.21 gallons = 0.1618 ft³

v = xyz = 11.4 ft x 15.7 ft x z

0.1618 ft³ = 179 ft² x z

=> z = 0.1618 ft³ / 179 ft²

=> z = 9.0391×10^-4, which is a little more than one quarter millimeter.

- Spaceman SpiffLv 71 decade ago
[EDIT: I misread the volume of paint...fixed for 1.21 gallons.]

1 gallon = 231 in³

The area covered is (11.4)(15.7) = 178.98 ft² = (178.98 ft²)(12 in/ft)² = 25,773.12 in²

The thickness of paint is the volume divided by the area:

t = V/A = (231)(1.21)/25,773.12 = 0.010845 in = (0.010845 in)(25.4 mm/in) = 0.2755 mm

- Anonymous5 years ago
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seems fairly straightforward, you have two cylinders and their ends. you have labor prices based on the height above ground. in units different from the cylinder measurements so first, you'll need to convert everything to whatever unit of measurement you are most comfortable with. then you have to figure out how much of the surface area of each cylinder is above 6 ft and how much is below 6 ft.then multiply each area by the prices and add the two numbers.